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  1. 10-10-2007, 06:13 AM #1
    Shermanator86
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    Pewter
    2001 Camaro SS hard top

    MPG with 3.73/4.10

    I know changing my rear end will help alot on the track but i was wondering if anyone with an m6 could tell me what they get for gas milege with either 3.73 or 4.10s, cuase i really like getting 22mpg after driveing my car to the track, running it and driving it home but i'm thinking thats not gonna happen with one of those rearends
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  2. 10-10-2007, 11:17 AM #2
    Jays00ss
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    2 SS's are better than 1 Jays00ss's Avatar
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    NBM / Silver
    00 SS / 71 SS Elcamino

    What ever you do Don't waste your money on 3.73's. Go at least 4.10's with a 6 speed. I had 3.90's with my stock 10 bolt and it was ok. I went to 4.30's in my new 9". 4.10's you'll be going at around 2000-2100 rpm at 75 mph in 6th gear. and you'll still get around 25 mpg when you drive. 3.73's are a huge waste of money with a 6 speed.
    2000 SS Camaro Heads, Large cam, Fast 90, 9"w/430's and locker, yada yada yada... you get the picture

    1971 SS ElCamino 402 Big Block 550HP

    2006 Silverado 2500HD 496 cubic inches of pure muscle
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  3. 10-14-2007, 05:14 PM #3
    9t8z28
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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    SILVER
    2004 CTS-V

    Quote Originally Posted by Jays00ss View Post
    What ever you do Don't waste your money on 3.73's. Go at least 4.10's with a 6 speed. I had 3.90's with my stock 10 bolt and it was ok. I went to 4.30's in my new 9". 4.10's you'll be going at around 2000-2100 rpm at 75 mph in 6th gear. and you'll still get around 25 mpg when you drive. 3.73's are a huge waste of money with a 6 speed.
    X2!! I get better mileage w/ the 4:10s. My car accelerates effortlessly
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  4. 10-15-2007, 08:04 PM #4
    INMY01TA
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    Black
    2001 Trans Am (sold)

    My gas milaege didn't drop even one whole mile per gallon goin from 3:42s to 4:10s. I wouldn't worry about it at all.
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  5. 10-16-2007, 09:28 PM #5
    silverz28camaro
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    sebring silver
    2000 z28

    my auto got 23mpg with the 2.73 and with the moser 12 bolt 3.73 got 21 mph, but yeah if you are m6 definitely get 4.10. gas mileage won't change
    2000 auto camaro
    13.54 @ 104 2.049 60' stock 2.73

    12.94 @ 109 2.002 60' full exhaust, lid, tune, nitto 555r 2.73

    11.899 @ 114.44 1.686 60' full exhaust, lid, tune, nitto 245/50-16 555r 3.73 moser 12-bolt 2800 fuddle, ls6 intake manifold, slp under drive pully,fiberglass hood, bmr k-member
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  6. 10-19-2007, 07:00 AM #6
    slims00ls1z28
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    2005 GTO M6 Black
    2000 Z28 A4 Red

    I have 4.11's behind an auto and with combined hwy/city I got roughly 20 mpg with a 3600 stall.
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